Hydrogen production in a compact supercritical water reformer

Experiments were conducted to investigate the reforming of organic compounds (primarily methanol) in supercritical water at 550–700°C and 27.6 MPa in a tubular Inconel 625 reactor. The results show that methanol can be completely converted to a product stream that is low in methane and near the equi...

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Bibliographic Details
Published in:International journal of hydrogen energy 2003-11, Vol.28 (11), p.1171-1178
Main Authors: Taylor, Joshua D, Herdman, Christopher M, Wu, Benjamin C, Wally, Karl, Rice, Steven F
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Applied sciences
Catalyst
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Energy
Exact sciences and technology
Fuel cell
Fuels
Hydrogen
Inconel 625
Methanol
Reforming
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Summary:Experiments were conducted to investigate the reforming of organic compounds (primarily methanol) in supercritical water at 550–700°C and 27.6 MPa in a tubular Inconel 625 reactor. The results show that methanol can be completely converted to a product stream that is low in methane and near the equilibrium composition of hydrogen, carbon monoxide, and carbon dioxide. The effect of reactor temperature, feed concentration of methanol, and residence time on both conversion and product gas composition was investigated and the results are presented. Reaction pathways and potential applications of this technology are discussed. Ethanol and ethylene glycol resulted in less desirable effluent gas, with high concentrations of methane and carbon monoxide. Acetone and diesel fuel both resulted in the reactor becoming plugged.
ISSN:0360-3199
1879-3487
DOI:10.1016/S0360-3199(02)00291-4